Add warning for copying from multiple wells

[Valiec]

When you select multiple wells with different conditions and copy/paste them, it either pastes the same conditions for every well, or leaves fields that vary blank (I've seen both behaviors).

I don't think a user would expect this, so unless this is changed, I think there should be a warning message when you try to do this saying something like "Warning: Attempting to copy multiple wells will only copy one set of conditions."